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Grade 12Algebra

Conditions for which a and b for which the eqn x2-ax-b2 is less than zero for all at least one positive x, are ?

1) a>3,b<3

2) a>3,b>0

3) a,b € R

4) none

Profile image of pooja sarkar
14 Years agoGrade 12
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1 Answer

Profile image of Shibesh Dutta Mishra
14 Years ago

??ans will be     1,2         as Discrimnant is always >0 for all a and b.. and so it cuts the x axis only that a,b not equals 0